It would seem like it would be cause for a suit. I'm sorry to hear you had to undergo such an experience.
But hey, it happens. On a routine dental checkup I had a dentist try to tell me I should remove some gold fillings I had put in rear molars. These things cost a fortune so I went back to the original doc (can't remember the professional term for this), and he practically laughed when I told him what this dentist had told me. He told me in so many terms that this work would outlive me. Outraged, I asked this doctor why the other one was recommending this work (we both know it's for the $$), and he responded that maybe he looked at it as cosmetic surgery. Of course he was just "being professional."
Cosmetic surgery for something no one will ever see???!!!!
Doctors like this should be called out and now, thanks to the internet, they are. At the time this happened things hadn't quite evolved as far as they have now in terms of professional recommendations.
Putting humans through this just so a "professional" can make a buck should not happen.